Throughout the centuries, people have been using all kinds of materials to build boats and ships of various sizes in order to cross the oceans or for hunting purposes. Hopefully this short introduction to shipbuilding materials was useful to enthusiasts willing looking into building their own boat.
Location: Samogitia Build of small mahogany sailboat with water jet propulsion I began to build a mahogany boat with water jet drive and and own design wingsail. Using AutoCAD I tried to design a boat hull somewhat similar dinghy, yachts and powerboats hulls. My disposal I have a woodworking shop, CNC machining center, stainless steel welding equipment, AutoCAD using experience, joiners tools and experience. Well, I still think I can build this boat and am looking forward to constructive criticism from you. Location: Samogitia Few pictures of boat building process CNC machined and assembled form for machogany boat build. Location: France Man, it's already looking very good - specially when you say you have no experience with boat building.
Location: Eustis, FL You don't really think that's anything close, to a reasonable set of sailing lines do you? If honestly I think that for better sailing lines need more boat wide, smaller transom and may be deeper keel.
Location: Samogitia More of boat building process Showed that the first layer will not be easy to put correctly on the curved boat hull form. Trying to resolve the situation with the springy rubber hose pieces pierced with wire hooks.
The second layer of mahogany cross diagonal bands is finished and sanded for outer 2,5 mm layer gluing. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals.
It could be a late 40's, early 50's Chris Craft deluxe or sedan, but some of the details are wrong.
Location: Norway Boatpicture I Have done some research on your image, and it looks like a ''brand new'' '1950 Chris Craft Super Deluxe. Location: San Francisco Boat building workshop I am hosting a four day hands-on boat building workshop in my backyard in San Francisco.
Location: Tasmania,Australia Its a great twist that Derek has - get paid to design a boat, then get the builders to pay for the privilege of building it too. I would like to hear from any Kelsall design builder who actually finished a boat without Derek being on site to supervise the KSS method. Location: San Francisco Actually, when Derek holds a workshop the builder, who is usually building his own boat, gets all kinds of free help as the class works on part of their boat and Derek is onsite to answer questions that come up, both of which benefit the builder. Also, this design is not a Kesall design - it is a resurrected Micronesian design from hundreds of years ago.
Originally Posted by pedruperez Actually, when Derek holds a workshop the builder, who is usually building his own boat, gets all kinds of free help as the class works on part of their boat and Derek is onsite to answer questions that come up, both of which benefit the builder.


I have been a fan of his work since his first plywood designs, and his innovative work in plywood. Location: San Francisco The 47 foot Chamorro Flying Proa that we built using redwood took two years to build and cost about $20k just for materials, and that was in California, not in the Marianas where it would have cost three times as much. Now that we've built the proa it has become a cultural treasure - it is the first one in over 250 years. We consider that if we can teach the younger generations how to build and sail again and if we can get 500 Chamorro Flying Proas on the water at the same time once again, that we will have recovered our maritime tradition. Our plan to get to 500 proas is to build three canoe houses - one on Guam, one on Saipan and one in San Diego where there is a large Chamorro community. I also suspect that foam and glass will survive longer than timber in the marine environment, which would make it good value.
Even so, have you done the detailed costing of marine plywood ( not timber ) with say epoxy ?
If you want to teach people to build boats, plywood is by far and away the easiest technique - especially if you want to get 500 + boats in the water. Location: Duluth, Minnesota Cool, i dont know how i didnt know that, i learnt something today. Location: Tasmania,Australia Yes, he may have started early on foam, but not exclusively since the 60's by any means. I am still curious if you have actually done the costing between ply and foam, considering you have so many boats you want to get in the water. Thanks to them, we now possess the knowledge of many shipbuilding techniques and what materials should be used for each. It is very tough and can take a rough journey, but is a lot more susceptible to rust and needs to be treated very frequently with paint in order to keep the water from entering.
It’s weight depends on how many layers are put, giving you flexibility when it comes to how you want your boat to feel. It can last you a very long time, and considering the cheap manufacturing cost, should be considered when building a boat.
As you can see, each material has its own purpose, along with certain flaws, and it is up to you to determine which will suit your best in your building. The most importantly - the boat will have to be small and beautiful, will have low weight that I can carry it on my car's roof. I've watched many boats images as shown on the internet and I have not bad joiner experience. The builder asks Derek to host a workshop, not the other way around, and the builder doesn't pay for the workshops. The traditional material was the wood from breadfruit trees that were abundant on the islands, but it is not available today due to loss of undeveloped land and the greatly increased instances of super-typhoons in the last 20 years that knock down the taller trees. The fact that the material isn't wood is not ideal, but on the other hand the Chamorro flying proa is a Chamorro invention and the design is unique in the world, so we reason that whatever material is used, it is a Chamorro proa. The idea is that anyone who wants to build a flying proa can just pay for the materials and go to the canoe house to use the table, tools, etc.


I know he has been doing foam core cats and tris since Toria in the 60s, one of of not the earliest foam core multies. Whether you are looking into buying a boat or are perhaps considering building one yourself, one of the key things to consider is the material. However, you must keep in mind what kind of boat you are planning to build when selecting the wood, as its performance will most likely vary depending on the environment and the task. If you consider using aluminium, make sure you understand the process, as you will require special tools to weld. Even though the structures itself is quite robust, it will likely need to be reinforced with other materials such as wood or foam in order to give your boat more stability on the water. If you are planning to buy one, make sure you check in with a ferrocement expert or a shipwright to check the construction for minor flaws which may lead to real issues in the future.
The one in San Diego, with a make-shift tarp sail that is only 70% of the proper size has hit 15 knots.
Also, research the wood’s density and hardness, as these affect how easily the water can enter its structure. This proa is currently in the San Diego Maritime Museum, on the water until the end of July.
We will build a 25 foot proa hull and outrigger and there will be demonstrations of how to build catamaran hulls.
The reason for that number is that in the old days, in the 1600s and 1700s, Europeans arriving in the islands reporting seeing hundreds of proas on the water. I Rubbed the hull with epoxy resin, with six hand-help put fiberglass and dip the cloth by epoxy. Now we want to build more using modern materials that are less expensive and for this we have chosen the KSS method of foam resin infusion (foam infused with polyester resin sandwiched between two layers of fiberglass using vacuum bagging).
Any material has to be shipped in and foam, resin and glass is much cheaper to ship than wood due to the weight and container space.
Remember that it requires a lot of maintenance in order to keep it from rotting and deteriorating.
And now it's too late to correct boat hull problems because, sadly but the hull is finished. Very nervous job.Will need to apply extra two layers of fiberglass without for preparing to warnish.
The cost for the four day workshop is $750 for the entire workshop and includes coffee and lunch each day. The sailing tradition was completely lost during Spanish colonization when the Chamorro population dropped from 80k to 2k people due to disease and war, and the Spanish forced all the Chamroros off the 14 northern islands and onto Guam where they were forbidden to build proas or even to sail off the reef. If you've never built anything out of fiberglass, this workshop will give you the practical skills and knowledge to build a boat.



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